There is also a Roll of 60-40 (Tin-Lead) Rosin Core Soldering in a Dispenser Tube (shown in the 2nd photo above). The Size of the Solder is 0.039" (1 mm) in Diameter and the Weight is 0.42 Ounces (12 g). This Pocket Pack of Solder Wire is easy to store and/or keep in your pocket for easy access.